Weight2Weight uses a Current weight, a New weight, an Activity level, Height and Age to calculate the Calories required each day to sustain these weights, and their associated Body Mass Indices (BMI). It also can estimate the weight change after a given number of days, or the number of days needed to reach a target weight for a change in caloric intake. It includes provisions for metric and English units, different daily Calorie requirements for male or female and five activity levels, plus options for three different calculated basal Calories/day/lb estimates and a custom Calories/day/lb.
This review was originally posted on VersionTracker.com. I was glad to find this application, as it seemed to fill a need. However, while it looks OK and SEEMS to be straightforward and I'd really like it to work, it is frequently difficult or impossible to enter data or do a calculation, even if one does exactly what the developer says in his examples and follows his tips to get data to be accepted. This is not a 1.00 release--it might qualify as a beta. Some functions are available some of the time, but some just don't work more than about 3% of the time. I give it 2 stars for the functions that do work. If they all worked all the time, it would rate 4 stars.
At least, Weight2Weight hasn't crashed--yet.
There seems to be no way to contact the developer. The link to the developer page here just goes to an HTML copy of the help file, which has a medium gray textured background that makes it hard to read the text. Even going up a level in his url doesn't help, as there is no contact information. That's why I gave it 1 star for Support/Documentation, even though the Help is acceptable.